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Shop Twin Extra Long Memory Foam Mattresses

Overview

Need some more room? Check out a 39" x 80" twin XL memory foam mattress with an additional 6" in length. Experience the advantages of a twin XL memory foam mattress, like pressure point relief, temperature regulation, and lasting durability. A great value for families looking to maximize their sleeping space, a twin XL memory foam mattress is a reliable choice.

40 results

NEW AT MATTRESS FIRM

Simmons Beautyrest Recharge Hybrid Greenmont 13.5" Plush Mattress
Simmons Beautyrest Recharge Hybrid Greenmont 13.5" Plush Mattress

$1,299.00 - $1,899.00
or as low as $18.04/mo All monthly payments are rounded up to the nearest whole dollar. +Monthly payment is based on minimum purchase price alone of $625.00, excluding tax and delivery charges, for 72 months at 0% APR*. Learn more.

EXTRA FIRM FIRM MEDIUM PLUSH ULTRA PLUSH
Features
- Extra thick Hybrid 13.5" mattress
- Hybrid mattress reduces pressure points
- Cooling technology
Sleepy's Calm 9" Euro Top Memory Foam Mattress
Sleepy's Calm 9" Euro Top Memory Foam Mattress

$149.00 - $249.00 $199.00 - $299.00 (up to 25% off)

EXTRA FIRM FIRM MEDIUM PLUSH ULTRA PLUSH
Features
- Soft quilted top layer provides a medium feel
- Four foam layers work together for support and pressure relief
- Lumbar support memory foam layer enhances back support
ONLY AT MATTRESS FIRM

Serta Perfect Sleeper Alesbury 8" Plush Memory Foam Mattress
Serta Perfect Sleeper Alesbury 8" Plush Memory Foam Mattress

$297.00 - $597.00

EXTRA FIRM FIRM MEDIUM PLUSH ULTRA PLUSH
Features
- Serta pillowsoft foam reduces pressure points
- Serta foam core provides proper balanced support
- Cool twist gel memory foam helps dissipate body heat
Tulo 10" Medium Mattress
Tulo 10" Medium Mattress

$575.00 - $950.00
or as low as $9.03/mo All monthly payments are rounded up to the nearest whole dollar. +Monthly payment is based on minimum purchase price alone of $625.00, excluding tax and delivery charges, for 72 months at 0% APR*. Learn more.

EXTRA FIRM FIRM MEDIUM PLUSH ULTRA PLUSH
Features
- Cooling memory foam prevents over heating
- Responsive foam layer provides pressure relief
- Foundation layer promotes medium comfort
Sleepy's Essential 8" Medium Memory Foam Mattress
Sleepy's Essential 8" Medium Memory Foam Mattress

$399.00 - $599.00

EXTRA FIRM FIRM MEDIUM PLUSH ULTRA PLUSH
Features
- Ventilated woven cover creates a more breathable surface
- Memory foam provides proper support and comfort
- 4" High-density foam core isolates movement
Sleepy's Cool Plush 12" Memory Foam Mattress
Sleepy's Cool Plush 12" Memory Foam Mattress

$799.00 - $1,099.00
or as low as $11.10/mo All monthly payments are rounded up to the nearest whole dollar. +Monthly payment is based on minimum purchase price alone of $625.00, excluding tax and delivery charges, for 72 months at 0% APR*. Learn more.

EXTRA FIRM FIRM MEDIUM PLUSH ULTRA PLUSH
Features
- Ventilated woven cover creates a more breathable surface
- Phase change cooling gel dissipates heat and provides a cooling sensation
- 3" Memory foam provides comfort and support
WEB SPECIAL

Hampton and Rhodes Trinidad 10.5” Medium Hybrid Mattress
Hampton and Rhodes Trinidad 10.5” Medium Hybrid Mattress

$239.20 - $399.20 $299.00 - $499.00 (up to 20% off)

EXTRA FIRM FIRM MEDIUM PLUSH ULTRA PLUSH
Features
- Offers superior pressure relief
- Diminishes tossing and turning
- Coordinating knit sides for breathability
WEB SPECIAL

Hampton and Rhodes San Martin 12” Plush Hybrid Mattress
Hampton and Rhodes San Martin 12” Plush Hybrid Mattress

$319.20 - $479.20 $399.00 - $599.00 (up to 20% off)

EXTRA FIRM FIRM MEDIUM PLUSH ULTRA PLUSH
Features
- Offers superior pressure relief
- Diminishes tossing and turning
- Beautifully detailed quilted knit cover
NEW AT MATTRESS FIRM

Hampton and Rhodes Decker 10.5" Medium Hybrid Mattress
Hampton and Rhodes Decker 10.5" Medium Hybrid Mattress

$249.50 - $399.50 $499.00 - $799.00 (up to 50% off)

EXTRA FIRM FIRM MEDIUM PLUSH ULTRA PLUSH
Features
- Offers superior pressure relief
- Diminishes tossing and turning
- Beautifully detailed quilted knit cover
NEW AT MATTRESS FIRM

Hampton and Rhodes Mercer 12" Plush Hybrid Mattress
Hampton and Rhodes Mercer 12" Plush Hybrid Mattress

$299.50 - $499.50 $599.00 - $999.00 (up to 50% off)

EXTRA FIRM FIRM MEDIUM PLUSH ULTRA PLUSH
Features
- Offers superior pressure relief
- Diminishes tossing and turning
- Beautifully detailed quilted knit cover
ONLY AT MATTRESS FIRM

Simmons Beautyrest Black Hybrid Gladney 14" Luxury Firm Mattress
Simmons Beautyrest Black Hybrid Gladney 14" Luxury Firm Mattress

$2,699.00 - $3,499.00
or as low as $37.49/mo All monthly payments are rounded up to the nearest whole dollar. +Monthly payment is based on minimum purchase price alone of $625.00, excluding tax and delivery charges, for 72 months at 0% APR*. Learn more.

EXTRA FIRM FIRM MEDIUM PLUSH ULTRA PLUSH
Features
- Extra thick Hybrid 14" mattress
- Hybrid mattress reduces pressure points
- Cooling technology
ONLY AT MATTRESS FIRM

Simmons Beautyrest Black Hybrid Alcove 13.5" Plush Mattress
Simmons Beautyrest Black Hybrid Alcove 13.5" Plush Mattress

$1,799.00 - $2,499.00 $2,199.00 - $2,899.00 (up to 18% off)
or as low as $24.99/mo All monthly payments are rounded up to the nearest whole dollar. +Monthly payment is based on minimum purchase price alone of $625.00, excluding tax and delivery charges, for 72 months at 0% APR*. Learn more.

EXTRA FIRM FIRM MEDIUM PLUSH ULTRA PLUSH
Features
- Extra thick hybrid 13.5" mattress
- Hybrid mattress reduces pressure points
- Cooling technology
ONLY AT MATTRESS FIRM

Simmons Beautyrest Black Hybrid Plus Jennings 14.5" Plush Mattress
Simmons Beautyrest Black Hybrid Plus Jennings 14.5" Plush Mattress

$3,499.00 - $4,299.00
or as low as $48.60/mo All monthly payments are rounded up to the nearest whole dollar. +Monthly payment is based on minimum purchase price alone of $625.00, excluding tax and delivery charges, for 72 months at 0% APR*. Learn more.

EXTRA FIRM FIRM MEDIUM PLUSH ULTRA PLUSH
Features
- Extra thick Hybrid 14.5" mattress
- Hybrid mattress reduces pressure points
- Cooling technology
ONLY AT MATTRESS FIRM

Simmons Beautyrest Black Hybrid Plus Tolliver 15.5" Firm Mattress
Simmons Beautyrest Black Hybrid Plus Tolliver 15.5" Firm Mattress

$3,499.00 - $4,299.00 $3,999.00 - $4,799.00 (up to 13% off)
or as low as $48.60/mo All monthly payments are rounded up to the nearest whole dollar. +Monthly payment is based on minimum purchase price alone of $625.00, excluding tax and delivery charges, for 72 months at 0% APR*. Learn more.

EXTRA FIRM FIRM MEDIUM PLUSH ULTRA PLUSH
Features
- Extra thick Hybrid 15.5" mattress
- Hybrid mattress reduces pressure points
- Cooling technology
ONLY AT MATTRESS FIRM

Simmons Beautyrest Black Hybrid Clermont 15.5" Plush Pillow Top Mattress
Simmons Beautyrest Black Hybrid Clermont 15.5" Plush Pillow Top Mattress

$2,599.00 - $3,399.00 $2,999.00 - $3,799.00 (up to 13% off)
or as low as $36.10/mo All monthly payments are rounded up to the nearest whole dollar. +Monthly payment is based on minimum purchase price alone of $625.00, excluding tax and delivery charges, for 72 months at 0% APR*. Learn more.

EXTRA FIRM FIRM MEDIUM PLUSH ULTRA PLUSH
Features
- Extra thick Hybrid 15.5" mattress
- Hybrid mattress reduces pressure points
- Cooling technology
Simmons Beautyrest Legend Garrison 14.7" Extra Firm Mattress
Simmons Beautyrest Legend Garrison 14.7" Extra Firm Mattress

$2,499.00 - $3,399.00
or as low as $34.71/mo All monthly payments are rounded up to the nearest whole dollar. +Monthly payment is based on minimum purchase price alone of $625.00, excluding tax and delivery charges, for 72 months at 0% APR*. Learn more.

EXTRA FIRM FIRM MEDIUM PLUSH ULTRA PLUSH
Features
- Extra thick 14.7" mattress
- Pocketed coil provides extra support
- Cooling technology
ONLY AT MATTRESS FIRM

Simmons Beautyrest Black Memory Foam with BlackICE™ Kelsie 12.5" Luxury Firm Mattress
Simmons Beautyrest Black Memory Foam with BlackICE™ Kelsie 12.5" Luxury Firm Mattress

$1,599.00 - $2,699.00 $2,499.00 - $3,599.00 (up to 36% off)
or as low as $22.21/mo All monthly payments are rounded up to the nearest whole dollar. +Monthly payment is based on minimum purchase price alone of $625.00, excluding tax and delivery charges, for 72 months at 0% APR*. Learn more.

EXTRA FIRM FIRM MEDIUM PLUSH ULTRA PLUSH
Features
- Extra thick memory foam 12.5" mattress
- Memory foam mattress reduces pressure points
- Cooling technology
ONLY AT MATTRESS FIRM

Simmons Beautyrest Black Memory Foam with BlackICE™ Scarlett 14" Plush Mattress
Simmons Beautyrest Black Memory Foam with BlackICE™ Scarlett 14" Plush Mattress

$3,799.00 - $4,699.00 $4,299.00 - $5,199.00 (up to 12% off)
or as low as $52.76/mo All monthly payments are rounded up to the nearest whole dollar. +Monthly payment is based on minimum purchase price alone of $625.00, excluding tax and delivery charges, for 72 months at 0% APR*. Learn more.

EXTRA FIRM FIRM MEDIUM PLUSH ULTRA PLUSH
Features
- Extra thick memory foam 14" mattress
- Memory foam mattress reduces pressure points
- Cooling technology
ONLY AT MATTRESS FIRM

Simmons Beautyrest Black Memory Foam with BlackICE™ Aubrie 13.5" Firm Mattress
Simmons Beautyrest Black Memory Foam with BlackICE™ Aubrie 13.5" Firm Mattress

$2,999.00 - $3,899.00 $3,499.00 - $4,399.00 (up to 14% off)
or as low as $41.65/mo All monthly payments are rounded up to the nearest whole dollar. +Monthly payment is based on minimum purchase price alone of $625.00, excluding tax and delivery charges, for 72 months at 0% APR*. Learn more.

EXTRA FIRM FIRM MEDIUM PLUSH ULTRA PLUSH
Features
- Extra thick memory foam 13.5" mattress
- Memory foam mattress reduces pressure points
- Cooling technology
ONLY AT MATTRESS FIRM

Simmons Beautyrest Black Memory Foam with BlackICE™ Nadia 14" Luxury Firm Mattress
Simmons Beautyrest Black Memory Foam with BlackICE™ Nadia 14" Luxury Firm Mattress

$3,799.00 - $4,699.00
or as low as $52.76/mo All monthly payments are rounded up to the nearest whole dollar. +Monthly payment is based on minimum purchase price alone of $625.00, excluding tax and delivery charges, for 72 months at 0% APR*. Learn more.

EXTRA FIRM FIRM MEDIUM PLUSH ULTRA PLUSH
Features
- Extra thick memory foam 14" mattress
- Memory foam mattress reduces pressure points
- Cooling technology
ONLY AT MATTRESS FIRM

Serta iSeries Hybrid 500 14" Cushion Firm Mattress
Serta iSeries Hybrid 500 14" Cushion Firm Mattress

$1,399.00 - $2,199.00 $1,599.00 - $2,399.00 (up to 13% off)
or as low as $19.43/mo All monthly payments are rounded up to the nearest whole dollar. +Monthly payment is based on minimum purchase price alone of $625.00, excluding tax and delivery charges, for 72 months at 0% APR*. Learn more.

EXTRA FIRM FIRM MEDIUM PLUSH ULTRA PLUSH
Features
- Cool reaction® gel memory foam reduces heat build-up and offers cooler sleep surface
- 2" EverCool® twist gel memory foam provides pressure point relief and promotes mattress airflow
- Pocketed coil system provides sturdy spinal support and balanced body-hugging cushion firm comfort
ONLY AT MATTRESS FIRM

Serta iSeries Hybrid 100 13.5" Firm Mattress
Serta iSeries Hybrid 100 13.5" Firm Mattress

$1,199.00 - $1,799.00
or as low as $14.57/mo All monthly payments are rounded up to the nearest whole dollar. +Monthly payment is based on minimum purchase price alone of $625.00, excluding tax and delivery charges, for 72 months at 0% APR*. Learn more.

EXTRA FIRM FIRM MEDIUM PLUSH ULTRA PLUSH
Features
- Cool reaction® gel memory foam offers pressure relief
- 1" EverCool® twist gel memory foam reduces heat build-up and promotes mattress airflow
- Pocketed coil system provides sturdy spinal support and balanced body-hugging comfort
ONLY AT MATTRESS FIRM

Serta iSeries Hybrid 300 13.5" Plush Mattress
Serta iSeries Hybrid 300 13.5" Plush Mattress

$1,199.00 - $1,799.00 $1,399.00 - $1,999.00 (up to 14% off)
or as low as $16.65/mo All monthly payments are rounded up to the nearest whole dollar. +Monthly payment is based on minimum purchase price alone of $625.00, excluding tax and delivery charges, for 72 months at 0% APR*. Learn more.

EXTRA FIRM FIRM MEDIUM PLUSH ULTRA PLUSH
Features
- Cool reaction® gel memory foam reduces heat build-up and offers cooler sleep surface
- 2" EverCool® fuze gel memory foam provides gentle comfort for pressure point relief
- Pocketed coil system provides sturdy spinal support and balanced body-hugging plush comfort
ONLY AT MATTRESS FIRM

Serta iComfort Blue Touch 100 9.75" Gentle Firm Memory Foam Mattress
Serta iComfort Blue Touch 100 9.75" Gentle Firm Memory Foam Mattress

$659.00 - $1,599.00
or as low as $9.15/mo All monthly payments are rounded up to the nearest whole dollar. +Monthly payment is based on minimum purchase price alone of $625.00, excluding tax and delivery charges, for 72 months at 0% APR*. Learn more.

EXTRA FIRM FIRM MEDIUM PLUSH ULTRA PLUSH
Features
- TempActiv™ touch fabric offers a cool to the touch sensation
- EverCool® fuze gel memory foam dissipates body heat
- 6” Serta ultimate edge foam core provides proper spinal alignment
ONLY AT MATTRESS FIRM

Serta iComfort Blue Touch 300 11.25" Firm Memory Foam Mattress
Serta iComfort Blue Touch 300 11.25" Firm Memory Foam Mattress

$1,149.00 - $1,999.00
or as low as $15.96/mo All monthly payments are rounded up to the nearest whole dollar. +Monthly payment is based on minimum purchase price alone of $625.00, excluding tax and delivery charges, for 72 months at 0% APR*. Learn more.

EXTRA FIRM FIRM MEDIUM PLUSH ULTRA PLUSH
Features
- TempActiv™ touch fabric offers a cool to the touch sensation
- EverCool® fuze gel memory foam dissipates body heat
- 1½" Deep reaction™ memory foam provides deep-down support
ONLY AT MATTRESS FIRM

Serta iComfort Blue Touch 500 11.25" Plush Memory Foam Mattress
Serta iComfort Blue Touch 500 11.25" Plush Memory Foam Mattress

$1,449.00 - $2,299.00
or as low as $20.13/mo All monthly payments are rounded up to the nearest whole dollar. +Monthly payment is based on minimum purchase price alone of $625.00, excluding tax and delivery charges, for 72 months at 0% APR*. Learn more.

EXTRA FIRM FIRM MEDIUM PLUSH ULTRA PLUSH
Features
- TempActiv™ touch fabric offers a cool to the touch sensation
- EverCool® fuze gel memory foam dissipates body heat
- 1½" EverCool® supreme memory foam craddles the body for pressure point relief
ONLY AT MATTRESS FIRM

Serta iComfort Blue Max Touch 1000 12.5" Cushion Firm Memory Foam Mattress
Serta iComfort Blue Max Touch 1000 12.5" Cushion Firm Memory Foam Mattress

$1,649.00 - $2,499.00
or as low as $22.90/mo All monthly payments are rounded up to the nearest whole dollar. +Monthly payment is based on minimum purchase price alone of $625.00, excluding tax and delivery charges, for 72 months at 0% APR*. Learn more.

EXTRA FIRM FIRM MEDIUM PLUSH ULTRA PLUSH
Features
- TempActiv™ touch fabric offers a cool to the touch sensation
- TempActiv™ max gel memory foam regulates temperature and provides an instant cool feeling
- 2" ActivBalance™ support foam enhances pressure point relief and body support
ONLY AT MATTRESS FIRM

Serta iComfort Blue Max Touch 3000 14" Elite Plush Memory Foam Mattress
Serta iComfort Blue Max Touch 3000 14" Elite Plush Memory Foam Mattress

$2,149.00 - $3,199.00
or as low as $29.85/mo All monthly payments are rounded up to the nearest whole dollar. +Monthly payment is based on minimum purchase price alone of $625.00, excluding tax and delivery charges, for 72 months at 0% APR*. Learn more.

EXTRA FIRM FIRM MEDIUM PLUSH ULTRA PLUSH
Features
- TempActiv™ touch fabric offers a cool to the touch sensation
- TempActiv™ max gel memory foam regulates temperature and provides an instant cool feeling
- 1½" Air suspension™ technology provides a unique cushioning feeling
Tulo 10" Firm Mattress
Tulo 10" Firm Mattress

$575.00 - $950.00
or as low as $9.03/mo All monthly payments are rounded up to the nearest whole dollar. +Monthly payment is based on minimum purchase price alone of $625.00, excluding tax and delivery charges, for 72 months at 0% APR*. Learn more.

EXTRA FIRM FIRM MEDIUM PLUSH ULTRA PLUSH
Features
- Cooling memory foam prevents over heating
- Responsive foam layer provides pressure relief
- Foundation layer promotes firm comfort
Tulo 10" Soft Mattress
Tulo 10" Soft Mattress

$525.00 - $900.00 $575.00 - $950.00 (up to 9% off)
or as low as $9.72/mo All monthly payments are rounded up to the nearest whole dollar. +Monthly payment is based on minimum purchase price alone of $625.00, excluding tax and delivery charges, for 72 months at 0% APR*. Learn more.

EXTRA FIRM FIRM MEDIUM PLUSH ULTRA PLUSH
Features
- Cooling memory foam prevents over heating
- Responsive foam layer provides pressure relief
- Foundation layer promotes soft comfort

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